Concurrent multicentric hemangiosarcoma and ovarian teratoma in an aged Pere David's deer (Elaphurus davidianus)

A 20-yr-old female Pere David's deer (Elaphurus davidianus) died following a 3-wk history of depression, anorexia, and progressive respiratory distres s. At necropsy, numerous soft to firm, tan or blood-filled nodular structur es, 1-6 cm in diameter, were noted in the lung and the visceral and parieta l pleura and within the mediastinum. Similar nodules were also found in the liver, spleen, kidney, and lymph nodes. Histologically, the nodules were d iagnosed as hemangiosarcoma. A benign teratoma was present in the left ovar y.